Portsmouth Rhode Island Weather Almanac  
Tuesday, June 8, 2021  
Mostly Cloudy and Foggy early, Partly Cloudy Day to Mostly Cloudy PM, Warm and Muggy  
Climate Normal Period Climate Record Period  
1991- 2020   1893 - 2021  
    June 8, 2021   Record   Record  
Observed Daily Data   2021   2020   Norm   Depart   Highest   Lowest  
Maximum Temperature   82   77   71   +11   88   in 1984   54   in 1947  
Minimum Temperature   63   51   55   +8   72   in 1999   42   in 1932  
Average Temperature   73   64   63   +10   80   in 1999   50   in 1955  
 Month Avg Max Temperature   76.4   73.1   70.5   +5.9   83.1   in 1925   59.3   in 1907  
Month Avg Min Temperature   59.3   54.3   54.1   +5.1   60.5   in 1925   46.4   in 1945  
Month Average Temperature   68.1   64.0   62.5   +5.6   72.0   in 1925   53.1   in 1907  
HDD   0   1   3   -3   15   in 1955   0   in 2021  
Month HDD   6   22   26   -20   95   in 1907   0   in 1899  
Season HDD   5051   5114   5454   -403   6585   in 1905   4521   in 2012  
CDD   8   0   1   +7   15   in 1999   0   in    
Month CDD   31   14   8   +23   61   in 1925   0   in 2017  
Year CDD   48   22   19   +26   62   in 1991   0   in 2003  
Maximum Dew Point   73   53   61   +12   74   in 2008   42   in 1988  
Minimum Dew Point   61   46   51   +10   66   in 2008   32   in 1988  
Average  Dew Point   67   50   56   +11   70   in 2008   37   in 1988  
 Month Avg Max Dew Point   66.3   59.9   59.6   +6.6   66.3   in 2021   48.5   in 1988  
Month Avg Min Dew Point   56.3   50.1   49.5   +6.8   56.3   in 2021   39.4   in 1988  
Month Average Dew Point   61.3   55.0   54.5   +6.8   61.3   in 2021   43.9   in 1988  
Precipitation   .00   .00   .12   -.12   1.57   in 1986            
One Hour   .00   .00           .47   in 1986            
Hourly Rate   .00   .00           3.74   in 2013            
Month Precipitation   .13   .48   .93   -.80   6.84   in 1982   .00   in 2005  
Year Precipitation   17.13   19.69   19.97   -2.84   36.73   in 1983   12.64   in 1957  
Snow   0.0   0.0   #####   #####   0.0   in              
Snow Depth   0   0           43990   in              
Month Snow   #N/A   #N/A   #N/A   #N/A   #N/A   in #N/A   #N/A   in    
Season Snow   27.7   12.9   33.5   -5.8   84.1   in 1996   5.0   in 1998  
    June 8, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   96%   94%   90%   +6%   100%   in 2003   59%   in 1952  
Minimum Humidity   69%   37%   54%   +15%   87%   in 1989   24%   in 1988  
Average Humidity   83%   66%   72%   +10%   94%   in 1989   45%   in 1988  
Maximum Barometer   30.06   29.99   30.00   +00.06   30.41   in 1934   29.64   in 2016  
Minimum Barometer   29.98   29.91   29.78   +00.20   30.24   in 2002   29.31   in 1980  
Average Barometer   30.02   29.95   29.89   +00.13   30.30   in 2002   29.51   in 1980  
Average Wind   5.9   4.3   5.8   +0.1   14.2   in 1982   1.4   in 1989  
Direction   SW   NNW   SW       NNE         SSE        
High Wind Gust   25   21   21   +4   37   in 1982   12   in 1989  
Direction   SW   WSW   SW       NNE         WSW        
High Heat Index   87   76   73   +14   96   in 2008            
Low Wind Chill                             37   in 1955  
Maximum Water Temp   64.2   56.1   62.1   +2.1   68.7   in 2007   56.1   in 2020  
Minimum Water Temp   59.4   52.9   58.4   +1.0   64.9   in 1999   52.9   in 2020  
Average Water Temp   61.8   54.5   60.2   +1.6   66.8   in 1999   54.5   in 2020  
Sunrise/ AM Twilight   5:11:12 AM   4:37:31 AM            
Sunset / PM Twilight   8:17:52 PM   8:51:32 PM            
Length Of Day   15:06:40                          
Special Conditions   Fog                                  
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